You into String Theory?

The math is way over my head, but the concepts of string theory (and membranes, etc) are really intriguing. Now when I daydream about the size of the universe I can jump out of our three little dimensions and travel "out" to a vantage point where our entire universe is a little bubble. Fun!

Or 11 if you're counting time. The normal 3-D that we are all familair with and also 7 "curled up" dimensions. "Curled Up" meaning that if anything travels in that spatial direction, it's back where it started immediately. Kind of like if you were gonna walk across the earth, except the earth is only 1 foot in diameter, so one stride takes you right back where you started. Why 10 dimensions? As you go to higher dimesions, complicated problems in Physics gets easier. It just turns out that the problems they want to solve are most easily solved in 10 or 23? dimensions. The problem is, we only detect 3, thus the whole "curled up" dimension thing. I have serious doubts about a theory that invents objects you can't detect just because it makes the math work, but who knows.